A leak-free electromagnetic induction valve for deep-sea applications and its working process

Abstract

A leak-free electromagnetic induction valve for deep-sea applications and its operating process are disclosed. The valve body includes a cylindrical cavity in its center, within which a coil holder is fitted. The coil holder has a cylindrical hole in its center, and an induction coil is fitted around it. A pressure ring is fitted on the top of the coil holder, pressing the induction coil firmly. A flow-through hole is also provided on the valve body at the bottom of the cylindrical cavity, with a built-in filter screen installed above the flow-through hole and at the bottom of the cylindrical hole. An opening is provided on one side wall of the valve body, through which a watertight insert is installed. Cables from both ends of the induction coil are led out via the watertight insert. An end cap is screwed onto the upper surface of the valve body. A valve core assembly is threaded into the cylindrical hole of the coil holder. This design allows for convenient emergency opening of the valve in deep-sea environments, facilitating emergency shearing, load shearing, and other operations, while maintaining high reliability.

Description

Technical Field

[0001] This invention relates to the field of deep-sea solenoid valve technology, and in particular to a leak-free electromagnetic induction valve for deep-sea applications and its working process. Background Technology

[0002] Deep-sea actuators are important components for underwater maintenance, rescue, demolition, and ballast disposal operations. As the complexity of underwater operations increases, the operation methods are gradually developing towards unmanned operation, remote control, extended operation, and high-efficiency, unpowered operation.

[0003] Existing deep-sea actuation devices are mainly driven by electricity or hydraulics, using underwater motors, reducers, or hydraulic systems. This approach results in complex structures and systems, large size and weight, low efficiency, and difficulty in achieving extended operation and remote control.

[0004] Underwater propulsion based on deep-sea environmental pressure is a simple and efficient actuator driving method. It uses the deep-sea environmental pressure to drive the actuator. However, in order to prevent malfunctions in long-term high-pressure environments, it is necessary to solve the technical problem of long-term sealing of controllable valve ports in low-temperature and high-pressure environments.

[0005] Existing technologies mainly employ low-leakage hydraulic valves, rupture valves, or explosive bolts. While low-leakage valves can achieve near-zero leakage, they still pose a risk of leakage under long-term low-temperature and high-pressure environments, resulting in low reliability. Rupture valves and explosive bolts are expensive and, being pyrotechnic devices, face significant limitations and safety hazards in their application and testing. Summary of the Invention

[0006] In response to the shortcomings of the existing production technology, the applicant provides a deep-sea-specific leak-free electromagnetic induction valve and its working process, which can easily complete the emergency opening of the induction valve in the deep-sea environment, facilitate emergency shearing, load shearing and other operations in the deep-sea environment, and has good operational reliability.

[0007] The technical solution adopted in this invention is as follows:

[0008] A deep-sea-specific leak-free electromagnetic induction valve includes a valve body with a cylindrical cavity in the middle. A coil holder is installed inside the cylindrical cavity, and the coil holder has a cylindrical hole in the middle. An induction coil is fitted around the coil holder, and a pressure ring is installed on the top of the coil holder to press the induction coil tightly. A flow hole is also provided on the valve body at the bottom of the cylindrical cavity, and a built-in filter screen is installed on the upper part of the flow hole and at the bottom of the cylindrical hole. An opening is provided on one side wall of the valve body, and a watertight insert is installed at the opening. The two ends of the induction coil are led out through the watertight insert via cables. An end cap is installed on the upper surface of the valve body by screws.

[0009] A valve core assembly is installed at the threaded part, and the valve core assembly extends into the cylindrical hole of the coil seat;

[0010] The valve core assembly consists of an upper valve core and a lower valve core. Both the upper and lower valve cores have a central hole. The central hole of the upper valve core is a through hole, while the central hole of the lower valve core is a blind hole. The upper and lower valve cores are welded together as one unit using a low-melting-point welding material. An embedded filter screen is installed at the upper end of the central hole of the upper valve core.

[0011] As a further improvement to the above technical solution:

[0012] The valve body has a cylindrical shape.

[0013] The bottom of the valve body is provided with a flange mounting structure.

[0014] The coil holder is an integral structure.

[0015] The coil holder is an inverted T-shaped cylindrical structure, and sealing grooves are provided on both the upper and lower end faces of the coil holder.

[0016] The induction coil has a cylindrical spiral structure.

[0017] Sealing rings are provided between the upper end face of the valve body and the end cover, between the top surface of the end cover and the upper valve core, between the upper end face of the coil seat and the end cover, and between the lower end face of the coil seat and the valve body.

[0018] A sealing ring is installed on the bottom surface of the valve body.

[0019] Both the coil holder and the pressure ring are made of high-temperature resistant non-metallic materials.

[0020] Working process of a leak-free electromagnetic induction valve specifically designed for deep-sea applications.

[0021] S1: Initial state

[0022] The valve core assembly is in the closed state:

[0023] When the induction coil is not energized, high-pressure water from the deep-sea environment enters the center hole of the upper valve core through the embedded filter screen. Since the upper and lower valve cores are welded structures, seawater from the outside cannot enter the cylindrical hole, and the induction valve is in the closed state at this time.

[0024] S2: Working Status

[0025] The valve core assembly is in the open position:

[0026] A high-frequency alternating current is applied to the induction coil by an external driver, and the valve core assembly is heated by the principle of high-frequency electromagnetic induction. When the valve core assembly is heated to the melting point of the low-melting-point welding material, the low-temperature welding material melts and flows into the central hole of the lower valve core. At this time, the upper valve core and the lower valve core are disconnected and separated. The central hole of the upper valve core is connected to the cylindrical hole. Seawater from the outside enters the actuator controlled by the valve through the built-in filter screen at the bottom of the cylindrical hole, driving the actuator to work.

[0027] The beneficial effects of this invention are as follows:

[0028] This invention has a compact and reasonable structure and is easy to operate. By adopting an upper and lower valve core welding structure and using the high-frequency electromagnetic induction heating principle to achieve the fusion opening of the valve core and valve port, it realizes the zero leakage requirement of the controllable valve port.

[0029] The present invention has a simple and reliable structure and principle. It does not have the traditional valve core and valve sleeve structure of control valves. The valve core has no fitting requirements, does not require precision machining, and has low cost.

[0030] The valve core described in this invention has a cartridge structure and can be reused multiple times by replacing the valve core.

[0031] This invention is particularly suitable for emergency shearing, ballast disposal, and other one-off operations in deep-sea environments. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the structure of the present invention (valve core assembly in closed state).

[0033] Figure 2 This is a schematic diagram of the structure of the present invention (valve core assembly in the open state).

[0034] Figure 3 This is a schematic diagram of the valve body of the present invention.

[0035] Figure 4 This is a schematic diagram of the coil holder of the present invention.

[0036] The components include: 1. Valve body; 2. End cap; 3. Valve core assembly; 4. Pressure ring; 5. Coil holder; 6. Induction coil; 7. Watertight insert; 8. Built-in filter screen.

[0037] 101. Cylindrical cavity hole; 102. Flange mounting structure; 103. Flow hole;

[0038] 501. Cylindrical hole; 502. Sealing groove;

[0039] 30. Embedded filter screen; 31. Upper valve core; 32. Lower valve core; 33. Low melting point welding material. Detailed Implementation

[0040] The specific embodiments of the present invention will now be described with reference to the accompanying drawings.

[0041] like Figures 1-4 As shown, the deep-sea-specific leak-free electromagnetic induction valve of this embodiment includes a valve body 1. A cylindrical cavity 101 is provided in the middle of the valve body 1. A coil seat 5 is installed inside the cylindrical cavity 101. A cylindrical hole 501 is opened in the middle of the coil seat 5. An induction coil 6 is sleeved on the outside of the coil seat 5. A pressure ring 4 is installed on the top of the coil seat 5 to press the induction coil 6 tightly. An overflow hole 103 is also opened on the valve body 1 at the bottom of the cylindrical cavity 101. An internal filter screen 8 is installed on the upper part of the overflow hole 103 and at the bottom of the cylindrical hole 501. An opening is provided on one side wall of the valve body 1. A watertight plug 7 is installed at the opening. The two ends of the induction coil 6 are led out through the watertight plug 7 via cables. An end cap 2 is installed on the upper end face of the valve body 1 by screws.

[0042] The valve core assembly 3 is installed at the threaded part, and the valve core assembly 3 extends into the cylindrical hole 501 of the coil seat 5;

[0043] The structure of the valve core assembly 3 is as follows: it includes an upper valve core 31 and a lower valve core 32. Both the upper valve core 31 and the lower valve core 32 have a central hole. The central hole of the upper valve core 31 is a through hole, and the central hole of the lower valve core 32 is a blind hole. The upper valve core 31 and the lower valve core 32 are welded together by a low melting point welding material 33. An embedded filter screen 30 is provided at the upper end of the central hole of the upper valve core 31.

[0044] The valve body 1 has a cylindrical shape.

[0045] A flange mounting structure 102 is provided at the bottom of the valve body 1.

[0046] The coil holder 5 is an integral structure.

[0047] The coil holder 5 is an inverted T-shaped cylindrical structure, and sealing grooves 502 are provided on both the upper and lower end faces of the coil holder 5.

[0048] The induction coil 6 has a cylindrical spiral structure.

[0049] Sealing rings are provided between the upper end face of valve body 1 and end cover 2, between the top surface of end cover 2 and upper valve core 31, between the upper end face of coil seat 5 and end cover 2, and between the lower end face of coil seat 5 and valve body 1.

[0050] A sealing ring is installed on the bottom surface of valve body 1.

[0051] Both the coil holder 5 and the pressure ring 4 are made of high-temperature resistant non-metallic materials.

[0052] The working process of the deep-sea-specific leak-free electromagnetic induction valve in this embodiment.

[0053] S1: Initial state

[0054] Valve core assembly 3 is in the closed state:

[0055] When the induction coil 6 is not energized, the high-pressure water in the deep sea environment enters the center hole of the upper valve core 31 through the embedded filter screen 30. Since the upper valve core 31 and the lower valve core 32 are welded structures, the outside seawater cannot enter the cylindrical hole 501. At this time, the induction valve is in the closed state.

[0056] S2: Working Status

[0057] Valve core assembly 3 is in the open state:

[0058] A high-frequency alternating current is applied to the induction coil 6 by an external driver, and the valve core assembly 3 is heated by the principle of high-frequency electromagnetic induction. When the valve core assembly 3 is heated to the melting point of the low-melting-point welding material 33, the low-temperature welding material melts and flows into the central hole of the lower valve core 32. At this time, the upper valve core 31 and the lower valve core 32 are disconnected and separated. The central hole of the upper valve core 31 is connected to the cylindrical hole 501. The outside seawater enters the actuator controlled by the valve through the built-in filter screen 8 at the bottom of the cylindrical hole 501 and drives the actuator to work.

[0059] The specific structure and function of the deep-sea leak-free electromagnetic induction valve described in this invention are as follows:

[0060] It mainly includes valve body 1, valve core assembly 3, induction coil 6, coil seat 5, pressure ring 4, end cover 2, watertight insert 7, and sealing components, etc.

[0061] The valve body 1 has a cylindrical structure with a cylindrical cavity 101 at its center. A coil seat 5, an induction coil 6, and a pressure ring 4 are installed sequentially inside the cylindrical cavity 101. The bottom surface of the valve body 1 has a flange mounting structure 102. A small flow hole 103 and a sealing ring are provided at the center of the bottom surface of the valve body 1. An internal filter screen 8 is installed at the upper end of the flow hole 103 and inside the coil seat 5.

[0062] The coil holder 5 is an inverted T-shaped cylindrical structure with a cylindrical hole 501 running vertically through the center. Sealing grooves 502 are provided on both the upper and lower end faces of the coil holder 5.

[0063] The induction coil 6 has a cylindrical spiral structure. The induction coil 6 is sleeved on the coil base 5. The two ends of the induction coil 6 are led out through the watertight plug 7 connected to the side of the valve body 1 via the connecting cable. The pressure ring 4 is installed on the upper end of the induction coil 6.

[0064] End cap 2 is connected to the upper end of valve body 1 by screws, and simultaneously presses against pressure ring 4 and coil seat 5. Sealing rings are provided on the upper and lower end faces of coil seat 5 and the upper end face of valve body 1. End cap 2 has a central hole in the center. Valve core assembly 3 is installed on the upper end of end cap 2 by threaded connection, and a sealing ring is provided at the mating surface.

[0065] The valve core assembly 3 has a two-section structure, with a central hole in the center of both the upper valve core 31 and the lower valve core 32. The central hole of the upper valve core 31 is a through hole, while the central hole of the lower valve core 32 is a blind hole. The upper valve core 31 and the lower valve core 32 are welded together by a low-melting-point welding material 33. An embedded filter screen 30 is provided at the upper end of the central hole of the upper valve core 31.

[0066] The coil holder 5 and the pressure ring 4 are made of high-temperature resistant non-metallic materials.

[0067] The working principle of this invention is as follows:

[0068] Valve core closed state: The induction coil 6 is not energized. High-pressure water in the deep sea environment enters the center hole of the upper valve core 31 through the embedded filter screen 30 at the upper end of the valve core assembly 3. Since the upper valve core 31 and the lower valve core 32 are welded structures, the outside seawater cannot enter the cylindrical hole 501 of the coil seat 5. At this time, the induction valve is in the closed state.

[0069] Valve core open state: A high-frequency alternating current is applied to the induction coil 6 by an external driver, and the valve core assembly 3 is heated using the principle of high-frequency electromagnetic induction. When the upper valve core 31 and lower valve core 32 reach the melting point of the low-melting-point welding material 33, the low-temperature welding material melts and flows into the central hole of the lower valve core 32. At this time, the upper valve core 31 and lower valve core 32 are disconnected, and the central hole of the upper valve core 31 is connected to the cylindrical hole 501 of the coil seat 5. At this time, the valve is in the open state. Figure 2 As shown, port A is connected to port B. Seawater from the outside enters the actuator controlled by the valve through the built-in filter screen 8 set at the bottom of the cylindrical hole 501 of the coil seat 5, driving the actuator to work.

[0070] The invention is convenient to use, easy to operate, and has good reliability. It is especially suitable for one-time operations such as emergency shearing and ballast disposal in deep-sea environments.

[0071] The above description is an explanation of the present invention and not a limitation thereof. The scope of the present invention is defined by the claims. Within the scope of protection of the present invention, any form of modification may be made.

Claims

1. A leak-free electromagnetic induction valve specifically designed for deep-sea applications, characterized in that: The valve body (1) includes a valve body (1) with a cylindrical cavity (101) in the middle. A coil seat (5) is installed in the cylindrical cavity (101). A cylindrical hole (501) is opened in the middle of the coil seat (5). An induction coil (6) is sleeved on the outside of the coil seat (5). A pressure ring (4) is installed on the top of the coil seat (5) to press the induction coil (6). An overflow hole (103) is also opened on the valve body (1) at the bottom of the cylindrical cavity (101). The overflow hole (103) is located above the cylindrical hole (501) and is connected to the cylindrical hole (501). 01) An internal filter screen (8) is installed at the bottom; an opening is provided on one side wall of the valve body (1), and a watertight plug (7) is installed at the opening. The two ends of the induction coil (6) are led out through the watertight plug (7) via cables; an end cap (2) is installed on the upper end face of the valve body (1) by screws; the end cap (2) simultaneously presses the pressure ring (4) and the coil seat (5); a threaded hole is provided in the middle of the end cap (2), and a valve core assembly (3) is installed at the threaded part. The valve core assembly (3) extends into the cylindrical hole (501) of the coil seat (5); The structure of the valve core assembly (3) is as follows: it includes an upper valve core (31) and a lower valve core (32). Both the upper valve core (31) and the lower valve core (32) have a central hole. The central hole of the upper valve core (31) is a through hole, and the central hole of the lower valve core (32) is a blind hole. The upper valve core (31) and the lower valve core (32) are welded together by a low melting point welding material (33). An embedded filter screen (30) is provided at the upper end of the central hole of the upper valve core (31). A high-frequency alternating current is applied to the induction coil (6) by an external driver, and the valve core assembly (3) is heated by the principle of high-frequency electromagnetic induction. When the valve core assembly (3) is heated to the melting point of the low-melting-point welding material (33), the low-melting-point welding material (33) melts and flows into the center hole of the lower valve core (32). At this time, the upper valve core (31) and the lower valve core (32) are disconnected.

2. The deep-sea-specific leak-free electromagnetic induction valve as described in claim 1, characterized in that: The valve body (1) has a cylindrical shape.

3. The deep-sea-specific leak-free electromagnetic induction valve as described in claim 1, characterized in that: The bottom of the valve body (1) is provided with a flange mounting structure (102).

4. The deep-sea-specific leak-free electromagnetic induction valve as described in claim 1, characterized in that: The coil holder (5) is an integral structure.

5. The deep-sea-specific leak-free electromagnetic induction valve as described in claim 1, characterized in that: The coil holder (5) is an inverted T-shaped cylindrical structure, and sealing grooves (502) are provided on both the upper and lower end faces of the coil holder (5).

6. The deep-sea-specific leak-free electromagnetic induction valve as described in claim 1, characterized in that: The induction coil (6) has a cylindrical spiral structure.

7. The deep-sea-specific leak-free electromagnetic induction valve as described in claim 1, characterized in that: A sealing ring is provided between the upper end face of the valve body (1) and the end cover (2), between the top surface of the end cover (2) and the upper valve core (31), between the upper end face of the coil seat (5) and the end cover (2), and between the lower end face of the coil seat (5) and the valve body (1).

8. The deep-sea-specific leak-free electromagnetic induction valve as described in claim 1, characterized in that: A sealing ring is installed on the bottom surface of the valve body (1).

9. A deep-sea-specific leak-free electromagnetic induction valve as described in claim 1, characterized in that: Both the coil holder (5) and the pressure ring (4) are made of high-temperature resistant non-metallic materials.

10. A method for operating a deep-sea-specific leak-free electromagnetic induction valve as described in claim 1, characterized in that: S1: Initial state Valve core assembly (3) is in the closed state: When the induction coil (6) is not energized, the high-pressure water in the deep sea environment enters the center hole of the upper valve core (31) through the embedded filter screen (30). Since the upper valve core (31) and the lower valve core (32) are welded structures, the seawater outside cannot enter the cylindrical hole (501). At this time, the induction valve is in the closed state. S2: Working Status Valve core assembly (3) is in the open state: A high-frequency alternating current is applied to the induction coil (6) by an external driver, and the valve core assembly (3) is heated by the principle of high-frequency electromagnetic induction. When the valve core assembly (3) is heated to the melting point of the low melting point welding material (33), the low melting point welding material (33) melts. The melted low melting point welding material (33) flows into the center hole of the lower valve core (32). At this time, the upper valve core (31) and the lower valve core (32) are disconnected and separated. The center hole of the upper valve core (31) is connected to the cylindrical hole (501). The outside seawater enters the actuator controlled by the valve through the built-in filter screen (8) at the bottom of the cylindrical hole (501) and drives the actuator to work.

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